Millised on Hibernate'i eelised võrreldes JDBC-ga?

Hibernate is an ORM (Object-Relational Mapping) framework that simplifies working with databases in Java applications. Advantages over JDBC:

• Reduces boilerplate code: Hibernate handles routine tasks like writing SQL queries, mapping results to objects, and managing connections.
• Object-oriented interaction: Developers work with Java objects rather than relational tables.
• Caching: Supports first and second level caching, reducing database access and improving performance.
• Lazy Loading: Related objects are loaded only when needed, saving resources.

  // Example of lazy loading
  // Order order = session.get(Order.class, orderId);
  // // Related items are not loaded yet
  // List<OrderItem> items = order.getItems(); // Items are loaded here
  

• Transaction management: Provides a convenient API for working with transactions.
• Database independence: Most of Hibernate code is portable across different databases.
• Built-in relationship management mechanisms: Easily manage relationships between objects (one-to-one, one-to-many, many-to-many).
• HQL (Hibernate Query Language) and Criteria API: High-level languages for writing queries, more convenient than native SQL.

  // HQL query example
  // String hql = "FROM Employee WHERE salary > 50000";
  // Query query = session.createQuery(hql);
  

• Automatic DDL generation: Can generate or update the database schema based on Java entities.